It’s a shortage of materials to make the parts that we desire. China is buying all the scrap metal they can get their hands on. This leaves little for the manufacturers in the USA.
Thats because the democrats have kept raising taxes , to where the factories cant compete w/ cheap china labor , and Trump wasnt in long enough to get things completely straightened up , and what he did get right the dumbass bunch of power hungry idots in there now have already started messing up !!